Add number of clang-tidy warnings eliminated

Author: torognes

man/vsearch.1

@@ -5141,7 +5141,7 @@ improve: more accurate line number when reporting non-ASCII characters in fastq
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 improve: remove checks for unneeded libraries during compilation (commit 249bb5d5276b1be6c9add60a538a16e1b9d0ebfb),
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-improve: code quality (eliminates clang-tidy warnings),
+improve: code quality (8,536 clang-tidy warnings eliminated),
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 improve: documentation and help messages (issues #604),
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